WASHINGTON — Lockheed Martin Corp. on Monday reduced furloughs by about 20 percent after the Pentagon said most civilian employees sent home in the partial U.S. government shutdown will be put back to work.

The top federal contractor had planned to furlough 3,000 people. About 2,400 of those employees, most of them tied to nondefense programs, are still unable to work because civilian government sites are closed or the Bethesda, Md.-based company has received an order to stop work from agencies, Lockheed said in a statement.

The Pentagon said Oct. 5 that 90 percent or more of about 350,000 workers it furloughed last week will be coming back, including inspectors who review contract work. While United Technologies Corp. on Sunday canceled plans to furlough as many as 4,000 workers, other top contractors haven’t completely reversed their plans.

“The Department of Defense’s decision will not eliminate the impact of the government shutdown on the company’s employees and the business,” Lockheed said in its statement.

Of the Lockheed employees still being furloughed, only 300 work on military programs.

About 82 percent of Lockheed’s $47.2 billion of sales in 2012 came from the U.S. government — including 61 percent from the Pentagon, according to a Securities and Exchange Commission filing.

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